Private foundation · EIN 85-3746433 · Greenville, Delaware · Philanthropy & grantmaking

Rock Oak Foundation

Should you approach them?

Don't send a cold proposal. The foundation reports that it only gives to preselected organizations; an introduction through a current grantee or board member is the realistic route.

From the 2025 Form 990-PF: 20 grants paid, $241K total, median $10K. 25% of grants stayed in Delaware.

Accepts applications
No
per 990-PF Part XV
Grants paid, 2025
20
$241K
Median grant
$10K
Stays in DE
25%
of grants
Deadline
—
Assets
$2.8M

Grants paid in 2025

20 grants, all shown · from Form 990-PF Part XV

RecipientPurposeAmount
WesttownWest Chester, PAGeneral purpose$35K
Met MuseumNew York, NYGeneral purpose$35K
Kenyon Collegewoollam HouseGambier, OHGeneral purpose$20K
Conservation InternationalArlington, VAGeneral purpose$20K
Brandywine River MuseumChadds Ford, PAGeneral purpose$15K
WhyyGreencastle, DEGeneral purpose$10K
Sweet Briar CollegeSweet Briar, VAGeneral purpose$10K
Planned Parenthood of DelawareWilmington, DEGeneral purpose$10K
Planned Parenthood of Southern PaPhiladelphia, PAGeneral purpose$10K
Colorado Snowsports Museum - Vail 10th Mountain DivisionVail, COGeneral purpose$10K
Kennett Area Community Service (kacs)Kennett Square, PAGeneral purpose$10K
Delaware Art MuseumWilmington, DEGeneral purpose$10K
WrtiPhiladelphia, PAGeneral purpose$10K
The American Cancer SocietyHagerstown, MDGeneral purpose$7,500
IfawWashington, DCGeneral purpose$6,000
American Museum of Natural HistoryNew York, NYGeneral purpose$5,000
New Bolton CenterPhiladelphia, PAGeneral purpose$5,000
Tri-State Bird RescueNewark, DEGeneral purpose$5,000
Tower Hill SchoolWilmington, DEGeneral purpose$5,000
Stroud WaterAvondale, PAGeneral purpose$2,500

By state: Pennsylvania 7 · New York 2 · Delaware 5 · Virginia 2 · Ohio 1 · Colorado 1

About this foundation

Rock Oak Foundation is a private grantmaking foundation in Greenville, Delaware, administered in care of The Fourth Floor LLC, tax-exempt since 2021. Private foundations must pay out roughly 5% of their assets each year, mostly as grants to 501(c)(3) public charities.

All filings on ProPublica

Does Rock Oak Foundation accept grant applications?

No. On its 2025 Form 990-PF the foundation checked that it only makes contributions to preselected organizations. Look for an introduction through a current grantee.

How much does Rock Oak Foundation give each year?

In tax year 2025 it paid $241K across 20 grants, a median of $10K.

Where does Rock Oak Foundation give?

Pennsylvania (7 grants), New York (2 grants), Delaware (5 grants) and elsewhere, per its latest filing.

More foundations near Greenville that accept applications

All in Delaware
FoundationBased inGrants paidMedian grantAccepts applicationsAssets
Donald and Martha Dewees Foundationsince 2009 Greenville, DE $1.1M24 grants · 2025 $25KYes $23M
Travis Foundationsince 2011 Greenville, DE $895K6 grants · 2024 $100KYes $17M
John and Alice Forester Charitable Trsince 1993 Greenville, DE $837K15 grants · 2024 $18KYes $13M
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